How to sort List records on column1 then on column2 in C#

I have List<UserRoles> and want to sort first on userId and then on Role ID, see following table and required result

// UserRoles table
ID    UserId    RoleID
1     100        1
2     101        1
3     100        2
4     101        2 

// Required result
ID    UserId    RoleID
1     100        1
2     100        2
3     101        1
4     101        2 

you should use OrderBy().ThenBy() to sort your record first or column user id and they by role id

userRolesList.OrderBy(p=>p.UserId)
           .ThenBy(q=>q.RoleID)
           .ToList();

Another way is to use like this:

var resultantList = from p in userRolesList
           order by p.userID, p.RoleID
           select p;